Machine for applying adhesive strips to soles



Oct. 16, 1928.

c. HUNT MACHINE FOR APPLYING ADHES IVE STRIPS TO SOLES Z 4 NVENTZZR.

MN m w Filed March 18'. 1922 nmnmummmumu Patented Get. 16, 1928.

ra ses TUNITETDTSTATESPATENT OFFICE? onnsrnn HUNT, or LYNN, MASSACHUSETTS, AssrGNon TO UNITED sn'on MACHINERY 'CORTPORA'IIOLLOF PATERSON, Nnw JnnsnY, a oonrona'rIoN on NEW JERSEY.

MACHINE ron APPLYING- ADHESIVE srnrrs'ro sonns.

Application filed March 18, 1922. Serial No. 54485 2.

, Thisinvention relates to machines for applyin'gadhesive strips to soles and is herein illustrated as embodiedin a-machine for applying to the edge and an adjoining face of a semi-vulcanizedrubber'sole a strip ofunvulcanized rubber. I In the manufacture ofcertain rubber-soled shoes, and more particularly in the manufacture of sporting shoes such as those used in playing basket ball, it is customary to prepare a semi-vulcanized rubber sole, and to incorporate the sole in a shoe having a canvas upper. Such a shoe, is subjected to great strain in use, and for this reason must'be emade particularly strong. Vulcanizaticn will not form a sufficiently strong bond'between the canvas upper and the semi-vulcanized sole; audit is, therefore, customary to apply a thin strip of unvulcanized'rubber around the margin'of the upper face of the sole before the sole is applied to the bottom of the lasted shoe so that the subsequent vulcanizing operation may elfectthe desired bonding. Commonly one portion of a strip of unvulcanized rubber is applied, as described above, to the margin of the upper face of the sole, and anotherportion is bent down and'applied to the edge of the sole After the sole has been applied to the lastt ed shoe, but before the vulcanization has taken place, a foxing' of unvulcanized rubber is applied around thelower marginofthe sides of the shoe adhering in part to that portion of the strip which covers the edge. of the sole and. in part to the canvas upper; and by rea son of the presenceyof this foXing the vulcanization of the shoe results in a further bonding of the upper to the sole;

The general objectofthe present invention into provide a'machine, for applyinp'to sole or similar article a strip of the type referred toaabove. "Inthe illustrativelmachine a strip guide,-shaped to bend the strip approximately at right angles along aline running lengthwise of the rstrip directs the bent striptotthe edge and one face of'a sole, the sole and strip being fed and the bent strip "pressed into place by series of rollers including two presser rollers and a' feed roller.

- This and other features of the invention including certain details of construction and combinations of parts will be described as pointed out in the appended claims. a Referring now to the accoinpanyingdrawmgrs, H r 1 v Figure 1 is a perspective of a'machine in which the present invention is embodied;

Figure 2 is a frontelevation; Figure 3 is an end elevation, and Figured is a perspective of a semi-vub canized rubber soleto which a strip of unvuloanized rubber has been applied by the machine. i I The illust-rative machine comprises three rollers; a feed "roller 5, an edge pressing roller 75 anda face pressing roller 9. The sole is forced against the roller 9 and fed along by the feed roller 5Q This feed roller is loose embodied in an illustrative machine and on a vertical shaft 11 and may be formed of fibre disks clamped between washers 13, '15 Mounted loosely on the shaft 11 above the feedwheel is a friction fibre disk 17, and

similarly mounted below it is a friction fibre disk 19. The upper face of the upper disk 17 rests against the fiat under face of a sleeve 21 which is fastto the shaft-11; and the under face of the lower disk19 rests upon the upper faceof a washer 23. A coiled compression of the construction which has just been de-- scribed-is to provide a friction drive for l the feed Wheel. 1 p The shaft 11 is mounted vin a bracket 31 which is pivotally mounted about the axis of a SQCOIiClVGTtlQELl shaft 33 and has a tail 35 extend ng rearwardly fronrit which is, connected by a tension spring 37 with one end of a pin; 39, said pin beingradiustably held in a bore in a stationary part of the machine by a set screw' ll. VVithvthis constructionthe feed roller 5 is held yieldingly against the sole at all times during the operation of the machine.- When no work is in the machine theposition of thefeed roller is determined by a stop (not shown). The shaft 11 has fast to it a gear 43 which meshes with a gear 45 fast upon the lower end of the shaft 33, the

upper end of said shaft carrying a gear 47 which meshes with a worm 49 on a horizontal driving shaft 51 which may be rotated by means of a pulley 58 from any suitable source of power.

The two rollers 7 and9 are mounted in the following manner in bracket, the two arms 55, 57 of which are fastened to the frame of 71. The spindle at its inner end is pivoted at 73 to a downwardly extending portion of the roller-carrying bracket-and has a tail which normally contacts with the under face of the bracket 31 and serves thereby to limit the extent to which the roller 7 may be swung by the spring 71. The purpose of so mounting the roller 7 is to cause it to press the rubber strip evenly against the edge of the sole whether or not the plane of that edge forms a right angle with the plane of the upper face of the sole. r

' Referring now more particularly to Figure- A, it will be seen that the unvulcanized rubber strip 200 has been bent along a line parallel to its length and that the portions on opposite sides of the bend have been applied respeetively to the ed eland to the upper. face-of the sole. In order to deliver the strip of unvulcanized rubber to the sole in such manner that it will be laid as shown inFigure 4, a strlp-guide 75 1s mounted on the lower end of an arm 77 which is pivoted about the axis of the bolt 61. A tension spring 79, fast at its upper end to a fixed pin and-at its lower end to a pin driven into the arm 7 7 normally holds the arm in its operative position and against a stop pin 81. The arm 77, and with it the strip-guide 'Z 5, may be swung to the left as viewed in Figure 3) when desired,'the extent of its movementin this direction. being limited by a second stop .pin 83. The stop pins are so located with respect to theaxis of the bolt 61 that the strip guide will be held by the spring 7 9 in either of the two positionsiinto which it may beswung by the operator.

The strip guide is provided =witha hinged cover held down by a suitable clamping device fastened by a thumb-screw 85, the guide-,

way in thestrip guide being shaped to cause a strip drawn through it to be bent substantially at ught angles along a line parallel to one edgeofthe strip and spaced farther from one edge than from the other. The main portlon of the strip .thus remains in its original substantially horizontal position while a coinparatively narrow margin is bent downwardly, the line of bend being so located that the "strip guide 75.

main portion of the strip covers the whole edge of the sole, and the bent down margin is applied to the upper face of the sole.

In the operation'of the'machine a strip 200 is laid upon a table 87, as shown in Figure 1, with its forward end projecting through the a sole 100 in the position shown in full lines in Figure 1 and in dotted lines in F igure 2 and guides the "sole as it is being fedv until the strip 200 has been laid all around the edge of the sole. I

. Having thus described my invention, what I claim as new and desire to secure b Letters Patent of the United States is 1. A machine of the class described having,

in combination, ineansfor feeding a sole,

means for guiding to the sole Iin adhesive unattached strip so bent that it'extends over the edge and the adjacent portion of the top face of the sole, and means for pressing the strip into firm contactwith said edge and:

face. i

2. A machine of the class described having,

in combination, means engaging the top and bottom face of a flexible sole to feed it, a strip The operatorthen-presents v guide constructed and arranged to bend strip'prior to its contact with the sole and de liver the strip to the'edge and top face of the sole, and means, including the'feeding means, for pressing the strip ffirinly: into place,

3. A machine for applying an adhesive strip over the corner at the junction of the edge and one face of a-sole having, in combination, threerollers arranged to engage the edge'a-nd the adjacent margins .of theopposite faces of a sole, means for driving one of themargin-engaging rollers to feed the sole, and aguide constructed and arrangedto bend a strip and deliver it to the edgeand one face of the sole in position to be engaged by two of the rollers.

4=. A. machine for applying an adhesive strip over the corner'atthe unct on .ofjthe edgeand one, face of a sole having, .in combination, three rollers arranged to engage the edge and the adjacent margins of the opposite'faces of a sole, yielding means for driving" one of the'margin-engagingrollers tofeed the sole and a guide constructed and arranged to bend a strip anddehver 1t to the edge'and one IOU face of the sole in position to be'engaged by two of the rollersi p i 5. A machine. for Lapplyingan adhesive strip over the corner at the junction of the edgeand one face of a sole having, in combinat-ion',flthree rollers arranged to engage'the V edge and the adjacent margins of theopposite facesof asole, means for driving one of the margin-engaging rollers to feed "the sole, a guide constructed" and arranged to bend a strip and deliverit to'the edge and one'iface of the sole in position to be engaged by two of the rollers, a pivot upon which theguide is mounted, and a spring for holding the guide normally in operative position while permitting it to be swungout of operative position when desired.

6. A machine for applying a strip of unvulcanized rubber over the corner at the junction of the edge and one face of a rubber sole having, in combination, a strip guide comprising a member having a guideway shaped to bend a strip drawn through it along a line parallel to an edge of the strip so. that the portions of the strip on opposite sides of the bend will be adapted to contact respectively with the edge and a face of a sole presented to the bent strip, a. roller located to press one portion of the strip against the edge of the sole, a second roller for pressing the other portion of the strip against the face ofthe sole and a feed member adapted to ress the sole against the second roller.

7. A machine for applying a strip of unvulcanized rubber over the corner atthe junction of the edge and one face of a rubber sole having, in combination, a strip guide comprising a member having a guideway shaped to bend a strip drawn through it along a line parallel to an edge of the sttipso that the portions of the strip on opposite sides'of the bend will be adapted to contact respectively with the edge and a face of a sole presented to the bent strip, a roller located to press one portion of the strip against the edge of the sole, a pivot about which said roller may swing,'a spring for urging the roller toward the sole, a second roller for pressing the other portion of the strip against the face of the sole, and a feed member adapted to press the sole against the second roller.

8. A machine for applying a strip of unvulcanized rubber over the corner at the junc tion of the edge and one face of a rubber sole having, in combination, a strip guide comprising a member having a guideway shaped to bend a strip drawn through it along a line parallel to anedge of the strip so that the portions of the strip on opposite sides of the bend will be adapted to contact respectively with the edge and a face of a sole presented to the bent strip, a roller located to press one portion of the strip against the edge of the sole, a pivot about which said roller may swing. a spring for urging the roller toward the sole, a second roller for pressing the other portion of the strip against the face of the sole, and a rotary feed member adapted to press the soleagainst the second roller.

9. VA machine for applying a strip of unvulcanized rubber over the corner at the junction of the edge and one face of a rubber sole having, in combination, a strip guide shaped to bend a strip passing through it in such manner that a portion of the strip will be ap-- to bend a strip passing through it in such manner that a portion of the strip will be applied to the edge of the sole and a second port-ion to the face "of thesole, a roller arranged topress said second portion against the face of the sole, a driven yieldingly mounted feed roller arranged to engage the opposite face of the sole, an edge presser arranged to press the first-named portion of the strip against the edge of the sole, a pivot about which the presser may swing, and a spring for urging the presser about the pivot.

11. A machine for applying a strip of 'unvulcanized rubber over the corner at the unotion of the edge and one face of a rubber sole having in combination, a strip guide shaped to bend a strip passing through it in such manner that a portion of the strip will be applied to the edge of the sole and a second portion to the face of the sole, a roller arranged to press said second portion against the face of the sole, a driven, yieldingly mounted feed roller arranged toengage the opposite face of the sole, an edge roller arranged to press the first-named portion of the strip against the edge of the sole, a pivot about which the edge roller may swing, and a spring for urging the roller about the pivot.

In testimony whereof I have signedmy name to this specification.

CHESTER HUNT. 

